A few cases come to mind:
Terry Norris vs Keith Mullings
Kostya Tszyu vs Vince Philips/Ricky Hatton
James Toney vs Drake Thadzi/Dave Tiberi/Montell Griffin
Antonio Tarver vs Glen Johnson
Vernon Forrest vs Ricardo Mayorga
Andrew Lewis vs Mayorga
Roberto Duran vs Tommy Hearns
Tommy Hearns vs Iran Barkley
Marco Antonio Barrera vs Junior Jones/Pac Man (first fight)